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Home > Anti-aging Research > L-Lysine

L-Lysine

Specific Recommendations:

News & Research:

  • L-lysine may help schizophrenia sufferers cope - Science Daily, 4/17/11 - "patients who received L-lysine alongside their normal medication found some reduction in the severity of their symptoms"
  • Research identifies the herbal supplements that are effective in treating anxiety - Science Daily, 10/6/10 - "A systematic review of research into the use of nutritional supplements for the treatment of anxiety disorders has found strong evidence for the use of extracts of passionflower or kava and combinations of L-lysine and L-arginine ... We found mixed results -- while passionflower or kava and L-lysine and L-arginine appeared to be effective, St John's Wort and magnesium supplements were not"
  • Hair Loss and Thyroid Disease - About.com, 6/10/99 - "In a recent study, Dr Hugh Rushton, a professor at Portsmouth University, also found that 90 percent of women with thinning hair were deficient in iron and the amino acid lysine. Lysine is the most difficult amino acid to get enough of via diet. Lysine helps transport iron, which is the most important element in the body and essential for many metabolic processes. When lysine and iron levels are low, the body probably switches some hair follicles off to increase levels elsewhere"

Abstracts:

  • Dietary l-Lysine Suppresses Autophagic Proteolysis and Stimulates Akt/mTOR Signaling in the Skeletal Muscle of Rats Fed a Low-Protein Diet - J Agric Food Chem. 2015 Sep 14 - "continuous feeding of a Lys-rich 10% casein diet for 15 days increased the masses of the soleus and gastrocnemius muscles. Taken together, supplementation of Lys to a low-protein diet suppresses autophagic proteolysis through the Akt/mTOR signaling pathway, and continuous feeding of a Lys-rich diet may increase skeletal muscle mass" - See L-lysine at Amazon.com.
  • Nutritional and herbal supplements for anxiety and anxiety-related disorders: systematic review - Nutr J. 2010 Oct 7;9(1):42 - "based on this systematic review, strong evidence exists for the use of herbal supplements containing extracts of passionflower or kava and combinations of L-lysine and L-arginine as treatments for anxiety symptoms and disorders. Magnesium-containing supplements and other herbal combinations may hold promise, but more research is needed before these products can be recommended to patients. St. John's wort monotherapy has insufficient evidence for use as an effective anxiolytic treatment"
  • Oral treatment with L-lysine and L-arginine reduces anxiety and basal cortisol levels in healthy humans - Biomed Res. 2007 Apr;28(2):85-90 - "the treatment with L-lysine and L-arginine decreased the basal levels of salivary cortisol and chromogranin-A (a salivary marker of the sympatho-adrenal system) in male subjects"
  • Biomarkers of arginine and lysine excess - J Nutr. 2007 Jun;137(6):1662S-8S - "Arginine supplementation is used in several disease states. In arginine-deficient states, supplementation is a logical choice of therapy. However, the definition of an arginine-deficient state is complex. For example, plasma arginine levels could be within normal range but intracellular arginine levels could be reduced because of membrane transport problems. Lysine competes with arginine for transport into the cell. In these situations, arginine supplementation of higher than required levels is proposed. Arginine has several important functions in metabolism as it is a precursor of metabolically active components such as nitric oxide (NO), ornithine, creatine, and polyamines"
  • Nutritional factors and hair loss - Clinical & Experimental Dermatology, 7/02 - "serum ferritin concentrations were a factor in female hair loss ... The role of the essential amino acid, l-lysine in hair loss also appears to be important. Double-blind data confirmed the findings of an open study in women with increased hair shedding, where a significant proportion responded to l-lysine and iron therapy"
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